Premium
Restoring post‐impact deformation at Sudbury: A circular argument
Author(s) -
Roest Walter R.,
Pilkington Mark
Publication year - 1994
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/93gl02044
Subject(s) - geology , deformation (meteorology) , kinematics , reflection (computer programming) , perpendicular , seismology , geometry , geophysics , geodesy , physics , classical mechanics , mathematics , computer science , oceanography , programming language
Recent seismic reflection observations have shown a considerable shortening of the Sudbury Structure in a direction roughly perpendicular to its long axis. Using a kinematic reconstruction technique for gridded geophysical data, which takes into account non‐uniformly distributed strain, we reconstruct the pre‐deformation shape of the Sudbury Structure and show that it could have been circular at the time of its formation (∼1.85 Ga). This supports an impact origin.